Give the number of rows in the truth table for the compound statement.(p ? q) ? (~r ? s) ? ~t
A. 25
B. 10
C. 8
D. 32
Answer: D
Mathematics
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Evaluate the exponential expression.(-9)2
A. -18 B. 18 C. -81 D. 81
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Solve the problem.A stone thrown downward with an initial velocity of 34.3 m/sec will travel a distance of s meters, where s(t) = 4.9t2 + 34.3t and t is in seconds. If a stone is thrown downward at 34.3 m/sec from a height of 215.6 m, how long will it take the stone to hit the ground? Round your answer to the nearest second.
A. 11 sec B. 7 sec C. 4 sec D. 15 sec
Mathematics
What number should be added to complete the square of the expression?x2 - 8x
A. 8 B. 16 C. -4 D. 32
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Use periodic properties of the trigonometric functions to find the exact value of the expression.cos 
A. - 
B. - 
C. 
D. 
Mathematics